CHEM2A FINAL Winter2007 KEY

CHEM2A FINAL Winter2007 KEY - Last Name:...

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Unformatted text preview: Last Name: _____________________________ First Name: _______________ Lab Sec. # ____ TA: ____________________ Lab day/time: _____________ Andreas Toupadakis, Ph.D. CHEMISTRY 2A Final Exam Winter 2007 Instructions: CLOSED BOOK EXAM ! DO NOT OPEN the exam until instructed to do so. No books, notes, or additional scrap paper are permitted. All information required is contained on the exam. Place all work in the space provided. If you require additional space, use the back of the exam. A scientific calculator may be used (if it is a programmable calculator, its memory must be cleared before the exam). Sharing of calculators is not allowed. (1) Read each question carefully (22 problems, 10 pages). (2) ANSWER ALL THE QUESTIONS YOU ARE SURE OF FIRST, AND THEN USE THE REMAINING TIME FOR THE REST. (3) Please show all relevant work where it is indicated for full credit. (4) The last page contains a periodic table and some useful information. You may remove it for easy access. (5) If you finish early, RECHECK YOUR ANSWERS! U.C. Davis is an Honor Institution 1. a b c d e 2. a b c d e 3. a b c d e 4. a b c d e 5. a b c d e 6. a b c d e 7. a b c d e 8. a b c d e 9. a b c d e 10. a b c d e 11. a b c d e 1-11 total points: 12. a b c d e 13. a b c d e 14. a b c d e 15. a b c d e 12-15 total points: Possible Points Points # 1-11 (3 points each) / 33 # 12-15 (5 points each) / 20 # 16 (15 points) / 15 # 17 (10 points) / 10 # 18 (06 points) / 06 # 19 (03 points) / 03 # 20 (11 points) / 11 # 21 (04 points) / 04 # 22 (10 points) / 10 Total Score (112) / 112 Multiple Choice Circle one WINTER 2007 FINAL CHEM 2A (Page 2 of 10) Concepts: Multiple Choice Questions 1-11: 3 points each (no partial credit ) 1. If one heats up a gas at constant volume: a. pressure increases b. # of moles increases c. molecules slow down d. pressure decreases e. the gas explodes 2. Which element that is positively ionized one time has the following configuration: 1s 2 2s 2 2p 6 3s 2 3p 6 ? a) Na b) Ne c) Ca d) K e) Ba 3. The bond in Cl 2 and LiF is, respectively: a) covalent, ionic b) ionic, covalent c) ionic, ionic d) covalent, covalent e) polar covalent, ionic 4. Choose the INCORRECT name formula combination. a. Fe 2 O 3 iron (III) oxide b. H 2 SO 3 sulfurous acid c. SiO 2 silicon oxide d. NH 4 ClO 3 ammonium chlorate e. CaH 2 calcium hydride 5. Write the net ionic equation for the reaction of magnesium carbonate and nitric acid. a. MgCO 3 (s) + 2 H + ! Mg 2+ + H 2 O + CO 2 (g) b. MgCO 3 (s) + 2 HNO 3 (aq) ! Mg(NO 3 ) 2 + H 2 O + CO 2 (g) c. MgCO 3 (s) + 2 HNO 3 (aq) ! Mg(NO 3 ) 2 (aq) + H 2 CO 3 (aq) d. Mg 2+ + CO 3 2- + 2 H + ! Mg 2+ + H 2 O + CO 2 (g) e. no reaction WINTER 2007 FINAL CHEM 2A (Page 3 of 10) 6. The quantum numbers of the last electron of arsenic...
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CHEM2A FINAL Winter2007 KEY - Last Name:...

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